SPIRIT III radiometer saturation effect

Saturation effect in functional photoacoustic imaging.

We investigate the saturation effect, which describes the violation of the linearity between the measured photoacoustic amplitude and the object's optical absorption coefficient in functional photoacoustic imaging when the optical absorption in the object increases. We model the optical energy deposition and photoacoustic signal generation and detection in a semi-infinite optical absorbing obje...

Nature and Spirit

Hegel's goal in his philosophy of subjective spirit is an empirically sensitive yet basically a priori science of mind. That sounds oxymoronic: How can a discipline be at once a priori and empirically sensitive? Here the elaborate structure of the Hegelian system serves a clear purpose. We have, first of all, the logic—the a priori element in all thought. The system's following two parts, the p...

The Spirit of Teaching

Mind and Spirit

Tending to the spirit.

Editor's note: At this year's Catholic Health Assembly in San Diego, two highly regarded professionals who are deeply committed to fostering holistic approaches to health and health care are scheduled to take the stage. Rose Shandrow, system director of Spiritual Care Services at Franciscan Health System in Tacoma, Wash., is being honored by CHA this year with a mid-career award for outstanding...